57730565631 has 4 divisors (see below), whose sum is σ = 76974087512. Its totient is φ = 38487043752.

The previous prime is 57730565623. The next prime is 57730565663. The reversal of 57730565631 is 13656503775.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 57730565631 - 2³ = 57730565623 is a prime.

It is a super-2 number, since 2×57730565631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57730561631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9621760936 + ... + 9621760941.

It is an arithmetic number, because the mean of its divisors is an integer number (19243521878).

Almost surely, 2^57730565631 is an apocalyptic number.

57730565631 is a deficient number, since it is larger than the sum of its proper divisors (19243521881).

57730565631 is a wasteful number, since it uses less digits than its factorization.

57730565631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19243521880.

The product of its (nonzero) digits is 1984500, while the sum is 48.

The spelling of 57730565631 in words is "fifty-seven billion, seven hundred thirty million, five hundred sixty-five thousand, six hundred thirty-one".